I can no longer delete podcasts

Why can't I delete old podcasts?

This evening I clicked Command L to go to a currently playing podcast. To my surprise I see that all episodes of each subscription are listed. Furthermore I cannot delete most of them, some I can but the right click delete doesn't work and the delete under the 3 little dots only sometimes works though sometimes I have to do the procedure twice. How many deletes does one need to do a dang delete?

I usually view my podcasts in Episode List view. Previously I was able to shift select a mass of unwanted episodes, and delete them with a simple right click to bring up the menu.